YOKOSUKA, Japan (Feb. 19, 2008) Sailors assigned to the Arleigh Burke-class guided-missile destroyer USS Curtis Wilbur (DDG 54) pose for a command photo under the ship's screws as the command wraps up a dry dock selective restricted availability. Curtis Wilbur is attached to Destroyer Squadron (DESRON) 15 and is permanently forward deployed to Yokosuka. U.S. Navy photo by Mass Communication Specialist 2nd Class Nardelito Gervacio

Nas fotos, os hélices de destróieres da classe “Arleigh Burke”. Abaixo, o sistema “Prairie” de mascaramento de assinatura sonar sendo testado. Ele produz bolhas que geram um ruído semelhante à chuva no sonar de submarinos inimigos, dificultando a classificação e identificação do contato.

Aboard USS Winston S. Churchill (DDG 81) Aug. 5, 2002 -- Water and air are forced through the propellers of the Churchill to test the ship's system that reduces reverberations made by the screws while underway.  The ship is near the end of a $25 million Post Shakedown Availability (PSA) at Bath Iron Works in Bath, Maine.  It will soon depart for her homeport of Norfolk, Va. and join the USS Theodore Roosevelt battle group.  U.S. Navy photo by Intelligence Specialist 1st Class Holly Hogan.

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